2006年5月至2007年6月期间,对长江口沿岸13个站位点碎波带出现的仔稚鱼进行调查分析,以探明仔稚鱼在长江口沿岸的时空分布以及利用碎波带栖息生长的变化规律。研究结果表明,仔稚鱼在春末、夏季和秋初的物种数和分布密度较高,尤其以7月和8月最高,秋末和冬季碎波带鱼类的物种数和分布密度均较低,在3月最少,月变化规律显著。长江口沿岸生活着四种生态类型的仔稚鱼,其中包括分布在长江口的南支和北支上游的淡水性鱼类,分布在沿海水域的海洋性和河口性鱼类以及季节性出现于河口的洄游性鱼类。通过对碎波带仔稚鱼群落优势种的体长月变化进行分析发现,洄游性鱼类刀鲚和河口性鱼类鱼都是季节性出现在碎波带并利用其作为保育场和索饵场,淡水性鱼类太湖新银鱼常年生活在河口碎波带索饵育肥,而海洋性鱼类大海鲢等是大潮时被潮水输送至河口碎波带短暂生活,表明仔稚鱼利用碎波带的方式因物种而异。 From May 2006 to June 2007, the larvae of 13 larvae of the Yangtze River Estuary were surveyed to investigate the spatiotemporal distribution of larvae in the Yangtze Estuary and the use of broken waves Changes in habitat growth. The results showed that the species number and distribution density of juvenile fish in late spring, early summer and early autumn were higher, especially in July and August, while the species number and distribution density of juvenile fish in late autumn and winter were lower , At least in March, the monthly variation was significant. There are four ecotypes of larvae living along the Yangtze River estuary, including freshwater fish species distributed in the south branch of the Yangtze Estuary and upstream of the North Branch, marine and estuarine fish species distributed in the coastal waters, and seasonal fish Migratory fish at the estuary. By analyzing the monthly variation of body length of dominant larvae of juvenile larvae in the broken zone, it was found that both migratory larvae and estuarine fish were both seasonal in the break zone and used as a breeding ground and cable Freshwater fish, freshwater fish, Taihu Lake, the new silverfish perennial life in the estuarine wave zone bait fattening, while marine fish such as tarpon tidal tide was transported to the mouth of the estuary wave of short life, that larvae use broken The mode of the band varies by species.